The document classifies animals into two main groups: invertebrates and vertebrates. Invertebrates do not have a bone skeleton, while vertebrates do. Invertebrates include worms, sea jellies, mollusks, arthropods, and sponges. Vertebrates include amphibians, reptiles, birds, and mammals. Amphibians can live on land and water and have gills and lungs, while reptiles have scales and lay eggs on land. Birds have feathers and wings and lay hard-shelled eggs, and mammals give birth to young, have hair/fur, and produce milk.

1. INVERTEBRATES AND
VERTEBRATES ANIMALS

2. •
Animals can be classified into two groups. Invertebrates do not have a bone
skeleton and vertebrates have a bone skeleton.
Dog skeleton. Vertebrate
animal.
Sea Jellies. Invertebrate
animal.

3. INVERTEBRATES ANIMALS
• It is classified:
1. Worms
2. Sea jellies
3. Molluks
4. Anthropods
5. Sponges

4. • Worms: Soft long bodies, no legs two body openings.
• Sea Jellies: Soft and long stinging bodies
• Mollusks: soft and warm bodies some of them have hard shells likes snails
• Anthropods: largest group of invertebrates , their skelton is outside
Their bodies
• Sponges: live in saltwater, don´t move from place to place , they
nutrients and tiny organisms to have food.

5. Worms:
Sea jellies
Molluks
Anthropods
Sponges

6. VERTEBRATES ANIMALS
• It is classified:
1. Amphibians
2. Repties
3. Birds
4. Mammals

7. • Amphibians: some of them can live both on land and water, cold-blooded animals,
lay eggs, gills to breathe underwater and lungs to breathe on land.
• Reptiles: made of dry scales, lay eggs on land and spend time underwater, cold-
blooded, sometimes they soak the sun.
• Birds: they have feathers and wings, not all birds fly, lay hard shell eggs, they are
warm blooded.
• Mammals They give birth to young ones, they don’t lay eggs, they have lungs to
breathe and they are warm blooded, hair or fur, they have special glands to produce
milk, humans are mammals too

8. • Amphibians
Repties
Birds
Mammals